Synthetic U(1) Gauge Invariance in a Spin-1 Bose Gas
arXiv:2204.11007 · doi:10.1103/PhysRevResearch.4.L042018
Abstract
Recent experimental realizations of the lattice Schwinger model [Nature 587, 392 (2020) and Science 367, 1128 (2020)] open a door for quantum simulation of elementary particles and their interactions using ultracold atoms, in which the matter and gauge fields are constrained by a local U(1) gauge invariance known as the Gauss's law. Stimulated by such exciting progress, we propose a new scenario in simulating the lattice Schwinger model in a spin-1 Bose-Einstein condensate. It is shown that our model naturally contains an interaction of the matter fields which respects the U(1) gauge symmetry but has no counterpart in the conventional Schwinger model. In addition to the Z2-ordered phase identified in the previous work, this additional interaction leads to a new Z3-ordered phase. We map out a rich phase diagram and identify that the continuous phase transitions from the disordered to the Z2-ordered and the Z3-ordered phases belong to the Ising and the 3-state Potts universality classes, respectively. Furthermore, the two ordered phases each possess a set of quantum scars which give rise to anomalous quantum dynamics when quenched to a special point in the phase diagram. Our proposal provides a novel platform for extracting emergent physics in cold-atom-based quantum simulators with gauge symmetries.
References in corpus (35)
- The density-matrix renormalization group in the age of matrix product states
- Entanglement Entropy and Quantum Field Theory
- Probing many-body dynamics on a 51-atom quantum simulator
- A spin-orbit coupled Bose-Einstein condensate
- Many-body localization, thermalization, and entanglement
- Observation of many-body localization of interacting fermions in a quasi-random optical lattice
- Spinor Bose Condensates in Optical Traps
- Synthetic magnetic fields for ultracold neutral atoms
- Light-induced gauge fields for ultracold atoms
- Realizing the Harper Hamiltonian with Laser-Assisted Tunneling in Optical Lattices
- Bose-Einstein condensation with internal degrees of freedom in alkali atom gases
- Quantum many-body scars
- Spinor Bose-Einstein condensates
- Spin-Orbit Coupled Degenerate Fermi Gases
- Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
- Realization of Two-Dimensional Spin-orbit Coupling for Bose-Einstein Condensates
- Quantum Many-Body Scars and Weak Breaking of Ergodicity
- Quantum scarred eigenstates in a Rydberg atom chain: entanglement, breakdown of thermalization, and stability to perturbations
- Atomic Quantum Simulation of Dynamical Gauge Fields coupled to Fermionic Matter: From String Breaking to Evolution after a Quench
- Quantum Link Models: A Discrete Approach to Gauge Theories
- Observation of gauge invariance in a 71-site Bose-Hubbard quantum simulator
- A synthetic electric force acting on neutral atoms
- Realization of density-dependent Peierls phases to engineer quantized gauge fields coupled to ultracold matter
- Lattice gauge theories and string dynamics in Rydberg atom quantum simulators
- Realizing a scalable building block of a U(1) gauge theory with cold atomic mixtures
- Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms
- Tensor networks for Lattice Gauge Theories and Atomic Quantum Simulation
- Density Matrix Renormalisation Group Approach to the Massive Schwinger Model
- Phase transitions in quantum chromodynamics
- Real-time Dynamics in U(1) Lattice Gauge Theories with Tensor Networks
- Cooling and entangling ultracold atoms in optical lattices
- Observation of density-dependent gauge fields in a Bose-Einstein condensate based on micromotion control in a shaken two-dimensional lattice
- Quantum Many-Body Scars and Quantum Criticality
- How transverse thermal fluctuations disorder a condensate of chiral spirals into a quantum spin liquid
- Quantum Computation of Phase Transition in the Massive Schwinger Model